puppetteer_cache.js

app.post('/', async (req, res) => {
  const html = req.body.html;
  if (!html) {
    await res.status(400);
    return;
  }
  try {
    await page.goto(
      `data:text/html,${html}`, {
        timeout: pageTimeoutMsec,
        waitUntil: ["load", "domcontentloaded", "networkidle0"]
      }
    );

    await page.setCacheEnabled(false);
    await page.reload({waitUntil: 'networkidle2'});
    
    const buff = await page.pdf(option);
    await res.status(200).contentType("application/pdf").send(buff).end();
  } catch (e) {
    console.error(e);
  }
});